Improvement in machines for jointing saws



H. BARRON.

MACHINES FOP. JOIN'I'ING SAWS. No;18Z,z66. Patented Sept.19, 1876;

NPE'FERS. PHOTO-LITMOGRAFHEFI.WASHINGTON D C.

L |MPRovEjMENTJN MACHlinE-s oR uolN'rlNGfsnWs..

. S ecification fo'rming part of Letters Patent No. l2,266, dated September 19,1816; applieationfiledf 1T0 all *whom'it may concern: i i I, Be it known that I,1HORTON Bnnnorg'of Eau Claire, in the countyjofEau Claire and State? of Wisconsin, have invented anew and useful- Improvement in Machines for Jointing ,SQWS, which improvement is fully set forth in i the following specification,reference beinghad to "the accompanyingdrawings, in which' Figure l is a top view of my improved saw.

jointing machine. Fig. 2 isa' front View of. the same. .Fig. 3 is aback view of the same.} f'Fig. 4 isa detail view of the oscillating saw-f clamp. Fig. 5 is acentral vertical cross-section jof the machine. Fig. 61s a vertical cross-section. of the machine in the linear w of Fig. l. Fig. 7 is a vertical cross-sectioinon an enlargedscalai of. the tool-post in which the file is fastened; "andFig. 8 is a similarvertical section in" line; with the"saw.

The nature of my invention consists in cer-J tain'constructions, combinations, and arrangements of parts hereafter described and spe-j cifically claimed, whereby a very simple and; effective machine for jointing double-cut saws is produced.

The object of my invention is to file even the points of worn, newly-set, or roughly-refiled sa -teethon a double-cut saw by aid of a machine which enables the operator to do the said work with more rapidity and. accuracy than it could be done by hand alone.

In the drawings, A represents a portion of a work-bench, to which the hollow frame B of my machine is fastened. The said frame B has a horizontal rod, b, upon which the hollow slides 0 of a traveling tool'post, O, are fitted. The slides a are connected with the tool-post O by diverging arms 0 made to slide above the frame B, so that the tool-post may be swung around the rod b freely. The tool-post O is semi-tubular at its .lower half, while its upper half is provided with a vertical guide-head, c and a brace, 0 through which latter a set-screw, D, is fitted. The foot 11 of the set-screw D is reduced in diameter, and fitted into a cylindrical plunger, E, and secured thereto by one or two pins, 0, and a groove, 01, in the said foot d. The plunger E is fitted into the guide-head 0 where it is fastened, when necessary, by a set-screw, 6 The foot e of the plunger E is square, and

i j August; 1'0, 18:76.

fitted intothevertical bearing f'iof a clamphead, F, to which it may be'secured at any heightl by a set-screw, f which, instead'iof the usual head, is provided with ahandle,f?.

The foot of the clamp-head is provided wit the ela'mp'plate G. .lThe said clamp-plate 1 has 'a T-groov'e, g, into which a file, H, ismsertedand secured by set-screws'h. Thejlowler open part of the said T-'groove permits the sawiwhich is to be jointed to enter'between it "and come in contact'withtheffile. The front of the frameBis provided with a bracket, b as shownJin Fig. 5, to which Lshaped rocking frame, I, is pivotedbyfa horizontal bolt, i. At each end of the re k? ing frame'Land connected there'tofis a deil ressed horizonta Plate, which is slqbta longitudinally,' as at i, for the reception ofia set-screw, J, and check-nuts j above and be low the plate I. "The upper end' of the, setscrew J is pivot-shaped, and supports a, plate,

'J, sothat it maybe raisedand lowered by the screw without tnrnin g. Upon those plates 'J the'saw Kis' placed and verticallyadjusted.

An elbow-plate,L', fastened to the frame I by a set-screw, l, and being adjustable through the means of a slot, 1, serves to longitudinally adjust the saw. A board, It, below the saw,

serves as a support for the back of the saw when it is being filed or jointed. The saw is clamped between wooden cheeks, one of them, M, being between the saw and the frame I, and the other, M, between the other side of the saw and the upright lugs i of the frame I. The check M is provided with inclined surfaces 'm, which, when forced against the lugs i operate as wedges, and thereby clamp the saw. The back of the frame I is near each end provided with a projection, n, and opposite the said projections in the frame B are vertical set-screws N, whereby the oscillations of the frame I are regulated. The frame B has an elevated guideway, N, as shown in Figs. 1 and 6, near the frame '1, upon which the tool-post O is horizontally guided.

Operation: The operator places the doublecut saw upon the plates J centrally with the pivot-bolt i, unfastens the plate L, and moves it against the end of the saw, and then fastens the said plate L again, and then brings the saw to a proper height by eitherlowering or are horizontal.

at the other side of the frame I. The file H 4 -screwing the-set-screw e tight.

2 mamas v saw K, and the cheek M in front of it, and the latter movedagainst the lugs 5 whereby the saw is clamped. The frame I is then tilted down until it is checked by one of the setscrews N, which is then screwed up or down until the points of the saw-teeth on that side The same adjustment is made is next inserted into the groove 9 of the clamphead and fastened by the set-screws h, and the tool-post 0 moved to the end of the saw, which is tilted down. The clamp-head F is then adjusted vertically by means of the set-screw D after the set-screw c has been loosened, and

the file H turned in the right direction, and

:the set-screw e screwed tight. 'Theoperator takes the handle f bears upon it, and slides it toward the middle of the saw, thereby filing. off the points of the highest saw-teeth after which he' tilts the tool-post C over, and slides it back to the end of the saw. This operation is repeated until the saw-teeth have all the If it should be necessary to lower the file after the first setting, the setsame height.

screw f on the handle f is loosened, the

clamp-head is moved down as much as practicable, and fastened in its new position by When one side of the saw is jointed it is tilted up, and

the file H reversed, and the above-described operation is repeated at the other side of the I mains clamped tight, and the saw-teeth can receive their finishing touch through the file in the hands of the operator. 7

Having thus described my invention, what I claim as new, and desire to secure by Let- .ters Patent, is-

1. In a saw -jointing machine, a rocking frame, I, for clamping and holding in position double-cut saws, substantially asset forth.

2. In a saw-jointing machine,a horizontallysliding and vertically-swinging tool-post, having a vertically-adjustable and horizontallyswinging file-holder, substantially as and for the purpose set forth. v

3,. In a saw-jointing machine, the combination of a rocking frame, I, and the tool-post O, substantially as and for the purpose set forth.

4. The rocking frame I, having slotted plates I, setscrews J, check-nuts j, and platesJ, substantially as and for the purpose set forth.

5. The combination of the frame B, having a bracket, b and set-screws N, and the rocking frame I, having a pivot-bolt, i, projections a, substantially as and for the purpose set forth.

6. The tool-post 0, having a set-screw, D, a

plunger, E, a clamp-head, F, and a file-clamp,

j 7. The combination of the rocking frame I, having lugs 73 and an elbow-plate, L, with the board 70 and the cheeks M M for clamping and adjusting a double-cut saw, substantially as set forth.

Witness my hand, in the matter of my application for a patent for a machine for jointing saws, this 31st day of July, 1876.

HORTON BARRON.

Witnesses L. M. VILAS, FRED GORDON. 

